Abstract
The properties of the oxide film formed on Grade 12 titanium during free corrosion immersion in brine at 25 and 108 C, both under γ radiation at 1.5×105 rad/h (Ce137) and in its absence, have been investigated. It is found that γ radiation causes marked changes in the nature of the oxide produced on Grade 12 Ti in brine. It increases the relative amount of the anatase form of TiO2 and produces a less defective surface. Radiation also increases the number of possible cathodic reactions resulting from the generation of radiolytic products. The differences caused by γ radiation lead to less hydrogen absorption by Grade 12 Ti and to shifts of the open circuit potential (OCP) in the noble direction. There is also an indication that slightly greater corrosion of Grade 12 Ti may be caused by γ radiation.
